WO2022056286A1 - Integrin targeting ligands and uses thereof - Google Patents
Integrin targeting ligands and uses thereof Download PDFInfo
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- WO2022056286A1 WO2022056286A1 PCT/US2021/049905 US2021049905W WO2022056286A1 WO 2022056286 A1 WO2022056286 A1 WO 2022056286A1 US 2021049905 W US2021049905 W US 2021049905W WO 2022056286 A1 WO2022056286 A1 WO 2022056286A1
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- optionally substituted
- compound
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/113—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing
- C12N15/1138—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing against receptors or cell surface proteins
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C279/00—Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups
- C07C279/04—Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of guanidine groups bound to acyclic carbon atoms of a carbon skeleton
- C07C279/14—Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of guanidine groups bound to acyclic carbon atoms of a carbon skeleton being further substituted by carboxyl groups
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- A—HUMAN NECESSITIES
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
- A61K47/542—Carboxylic acids, e.g. a fatty acid or an amino acid
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- A—HUMAN NECESSITIES
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- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/54—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound
- A61K47/545—Heterocyclic compounds
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
- A61K48/0008—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition
- A61K48/0025—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition wherein the non-active part clearly interacts with the delivered nucleic acid
- A61K48/0033—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy characterised by an aspect of the 'non-active' part of the composition delivered, e.g. wherein such 'non-active' part is not delivered simultaneously with the 'active' part of the composition wherein the non-active part clearly interacts with the delivered nucleic acid the non-active part being non-polymeric
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P21/00—Drugs for disorders of the muscular or neuromuscular system
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C275/04—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms
- C07C275/06—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an acyclic and saturated carbon skeleton
- C07C275/16—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to acyclic carbon atoms of an acyclic and saturated carbon skeleton being further substituted by carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/74—Amino or imino radicals substituted by hydrocarbon or substituted hydrocarbon radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
- C07D233/04—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D233/28—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D233/44—Nitrogen atoms not forming part of a nitro radical
-
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/06—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D239/08—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms directly attached in position 2
- C07D239/12—Nitrogen atoms not forming part of a nitro radical
- C07D239/14—Nitrogen atoms not forming part of a nitro radical with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, attached to said nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/32—One oxygen, sulfur or nitrogen atom
- C07D239/42—One nitrogen atom
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H19/00—Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radical; Nucleosides; Mononucleotides; Anhydro-derivatives thereof
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2310/00—Structure or type of the nucleic acid
- C12N2310/10—Type of nucleic acid
- C12N2310/14—Type of nucleic acid interfering N.A.
Definitions
- the present disclosure relates to targeting ligands that bind to integrin receptors for the delivery of oligonucleotide-based compounds, e.g., double-stranded RNAi agents, to certain cell types in vivo, for inhibition of genes expressed in those cells.
- oligonucleotide-based compounds e.g., double-stranded RNAi agents
- av[36 integrin can promote cell invasion and migration in metastasis, and inhibit apoptosis. av[36 integrin may also regulate expression of matrix metalloproteases (MMPs) and activate TGF-pi.
- MMPs matrix metalloproteases
- TGF-pi TGF-pi
- integrin alpha-v beta-6 which are suitable to be conjugated to cargo molecules, to deliver the cargo molecules to cells expressing integrin alpha-v beta-6, in vivo.
- specific cargo molecules such as therapeutic oligonucleotide-based compounds (e.g., an antisense oligonucleotides or an RNAi agents)
- targeting ligands that are able to target integrin alpha-v beta-6 that can be conjugated to oligonucleotide-based compounds to deliver the therapeutic to cells and/or tissues expressing integrin alpha-v beta-6, and facilitate the entry of the therapeutic into the cell through receptor-mediated endocytosis, pinocytosis, or by other means.
- av[36 integrin ligands also referred to herein as av[36 ligands.
- the av[36 integrin ligands disclosed herein are stable in serum and have affinity for, and can bind with specificity to, av[36 integrins.
- the av[36 integrin ligands can be conjugated to cargo molecules to facilitate the delivery of the cargo molecule to desired cells or tissues that express av[36 integrin, such as to skeletal muscle cells.
- a therapeutic cargo molecule e.g., an active pharmaceutical ingredient
- RNAi agent oligonucleotide-based compounds
- administering an effective amount of one or more av[36 integrin ligands that have been conjugated to one or more oligonucleotide- based compounds (e.g., an oligonucleotide-based therapeutic) capable of inhibiting expression of a target gene in a cell, such as an RNAi agent.
- oligonucleotide-based compounds e.g., an oligonucleotide-based therapeutic
- described herein are methods of inhibiting expression of a target gene in a cell of a subject, wherein the subject is administered an effective amount of one or more av[36 integrin ligands that have been conjugated to one or more oligonucleotide-based compounds capable of inhibiting expression of a target gene in a cell, such as an RNAi agent.
- compositions that include av[36 integrin ligands.
- the compositions described herein can be pharmaceutical compositions that include one or more av[36 integrin ligands disclosed herein conjugated to one or more therapeutic substances, such as an RNAi agent or other cargo molecule.
- described herein are methods of treatment of a subject having a disease or disorder mediated at least in part by expression of a target gene, wherein the methods including administering to a subject in need thereof an effective amount of a pharmaceutical composition, wherein the pharmaceutical composition includes one or more avP6 integrin ligands disclosed herein conjugated to one or more oligonucleotide-based compounds, such as an RNAi agent.
- this disclosure provides synthetic av[36 integrin ligands.
- an av[36 integrin ligand disclosed herein includes the structure of the Formula I: or a pharmaceutically acceptable salt thereof, wherein
- R 1 is optionally substituted alkyl, optionally substituted alkoxy, or i i , wherein R and R are each independently optionally substituted alkyl or a cargo molecule, or R 1 is a cargo molecule;
- R 2 is H, optionally substituted alkyl, or a cargo molecule
- R 3 is H or optionally substituted alkyl
- R 4 is H or optionally substituted alkyl
- R 5 is H or optionally substituted alkyl
- R 6 is selected from the group consisting of H, optionally substituted alkyl, optionally substituted alkoxy, halo, optionally substituted amino, or a cargo molecule;
- Q is optionally substituted aryl or optionally substituted alkylene
- X is O, CR 8 R 9 , NR 8 ; wherein R 8 is selected from H, optionally substituted alkyl, or R 8 is taken together with Rx or Ry to form a 4-, 5-, 6-, 7-, 8- or 9-membered ring, and R 9 is H or optionally substituted alkyl;
- Rx and Ry are each independently H, optionally substituted alkyl, a cargo molecule or Rx and Ry may be taken together to form a double bond with R 10 , wherein R 10 is H, optionally substituted alkyl, or R 10 may be taken together with X and the atoms to which it is attached to form a 4-, 5-, 6-, 7-, 8, or 9-membered ring; wherein at least one of R 1 , R 2 , R 6 , R 11 , R 12 , Rx and Ry comprise a cargo molecule; and wherein when Q is optionally substituted alkylene and the length of the optionally substituted alkylene chain represented by Q is 3 carbons, then R 1 is
- an av[36 integrin ligand disclosed herein can be conjugated to one or more (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
- cargo molecules e.g., any of the cargo molecules described herein or known in the art.
- more than one av[36 integrin ligand disclosed herein can be conjugated to one cargo molecule (e.g., any of the cargo molecules described herein or known in the art).
- compositions that include one or more of the av06 integrin ligands described herein.
- compositions comprising one or more av[36 integrin ligands disclosed herein include one or more oligonucleotide-based compound(s), such as one or more RNAi agent(s), to be delivered to a cell in vivo.
- described herein are compositions for delivering an RNAi agent to a cell in vivo, wherein the RNAi agent is linked to one or more av[36 integrin ligands.
- Compositions that include one or more av[36 integrin ligands are described.
- a composition comprises a pharmaceutically acceptable excipient.
- a composition that includes one or more av[36 integrin ligands comprises one or more other pharmaceutical substances or pharmaceutically active ingredients or compounds.
- medicaments that include one or more av[36 integrin ligands are described herein.
- compositions that include one or more av[36 integrin ligands disclosed herein conjugated to one or more cargo molecules can facilitate the delivery of the cargo molecuele in vivo or in vitro to cells that express integrin av[36.
- compositions that include one or more av[36 integrin ligands disclosed herein can deliver cargo molecules, such as oligonucleotide-based compounds, in vivo or in vitro, to skeletal muscle cells, type I and II alveolar epithelial cells, goblet cells, secretory epithelial cells, ciliated epithelial cells, comeal and conjunctival epithelial cells, dermal epithelial cells, cholangiocytes, enterocytes, ductal epithelial cells, glandular epithelial cells, and epithelial tumors (carcinomas).
- cargo molecules such as oligonucleotide-based compounds, in vivo or in vitro, to skeletal muscle cells, type I and II alveolar epithelial cells, goblet cells, secretory epithelial cells, ciliated epithelial cells, comeal and conjunctival epithelial cells, dermal epithelial cells, cholangiocytes, enterocyte
- the present disclosure provides methods comprising the use of one or more av[36 integrin ligands and/or compositions as described herein and, if desired, bringing the disclosed av[36 integrin ligands and/or compositions into a form suitable for administration as a pharmaceutical product.
- the disclosure provides methods for the manufacture of the ligands and compositions, e.g., medicaments, described herein.
- compositions that include one or more av[36 integrin ligands can be administered to subjects in vivo using routes of administration known in the art to be suitable for such administration in view of the cargo molecule sought to be administered, including, for example, subcutaneous, intravenous, intraperitoneal, intradermal, transdermal, oral, sublingual, topical, or intratumoral administration.
- routes of administration known in the art to be suitable for such administration in view of the cargo molecule sought to be administered, including, for example, subcutaneous, intravenous, intraperitoneal, intradermal, transdermal, oral, sublingual, topical, or intratumoral administration.
- the compositions that include one or more av[36 integrin ligands may be administered for systemic delivery, for example, by intravenous or subcutaneous administration.
- compositions that include one or more av[36 integrin ligands may be administered for localized delivery, for example, by inhaled delivery via dry powder inhaler or nebulizer. In some embodiments, the compositions that include one or more av[36 integrin ligands may be administered for localized delivery by topical administration.
- methods for delivering one or more desired cargo molecule(s) to a skeletal muscle cell in vivo include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- methods for delivering one or more desired cargo molecule(s) to a type II alveolar epithelial cell in vivo wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- disclosed herein are methods for delivering one or more desired cargo molecule(s) to a goblet cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- av[36 integrin ligands conjugated to the one or more cargo molecule include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- methods for delivering one or more desired cargo molecule(s) to a comeal epithelial cell in vivo include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- methods for delivering one or more desired cargo molecule(s) to a conjunctival epithelial cell in vivo wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- av[36 integrin ligands conjugated to the one or more cargo molecule include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- methods for delivering one or more desired cargo molecule(s) to a cholangiocyte in vivo include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- disclosed herein are methods for delivering one or more desired cargo molecule(s) to an enterocyte in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- methods for delivering one or more desired cargo molecule(s) to a ductal epithelial cell in vivo wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecule.
- avP6 integrin ligands conjugated to the one or more cargo molecule include administering to the subject one or more avP6 integrin ligands conjugated to the one or more cargo molecule.
- av[36 integrin ligands conjugated to the one or more cargo molecules include administering to the subject one or more av[36 integrin ligands conjugated to the one or more cargo molecules.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a type I alveolar epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a type I alveolar epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a type II alveolar epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a type II alveolar epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a goblet cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a goblet cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for avP6 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for avP6 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a secretory epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a secretory epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a ciliated epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a ciliated epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a comeal epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a comeal epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a conjunctival epithelial cell in vivo, wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a conjunctival epithelial cell in vivo, wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for avP6 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for avP6 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a dermal epithelial cell in vivo, wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a dermal epithelial cell in vivo, wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for avP6 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for avP6 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a cholangiocyte in vivo, wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a cholangiocyte in vivo, wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for avP6 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for avP6 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to an enterocyte in vivo, wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- methods of delivering an RNAi agent to an enterocyte in vivo wherein the methods include administering to the subject one or more avP6 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for avP6 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for avP6 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a ductal epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a ductal epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to a glandular epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to a glandular epithelial cell in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- disclosed herein are methods of delivering an oligonucleotide-based compound to an epithelial tumor (carcinoma) in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more oligonucleotide-based compounds.
- disclosed herein are methods of delivering an RNAi agent to an epithelial tumor (carcinoma) in vivo, wherein the methods include administering to the subject one or more av[36 integrin ligands conjugated to the one or more RNAi agents.
- RNAi agent conjugated to one or more ligands having affinity for av[36 integrin include administering to the subject an RNAi agent conjugated to one or more ligands having affinity for av[36 integrin.
- av[36 integrin ligands having serum stability and affinity for integrin av[36.
- the av[36 integrin ligands can be used to target cells that express integrin av[36 in vitro, in situ, ex vivo, and/or in vivo.
- the av[36 integrin ligands disclosed herein can be conjugated to one or more cargo molecules to preferentially direct and target the cargo molecules to cells that express integrin av[36 in vitro, in situ, ex vivo, and/or in vivo.
- the cargo molecules include or consist of pharmaceutically active compounds.
- the cargo molecules include or consist of oligonucleotide-based compounds, such as RNAi agents.
- the av[36 integrin ligands disclosed herein are conjugated to cargo molecules to direct the cargo molecules to epithelial cells in vivo.
- this disclosure provides synthetic av[36 integrin ligands.
- an av[36 integrin ligand disclosed herein includes the structure of Formula I: or a pharmaceutically acceptable salt thereof, wherein R 1 is optionally substituted alkyl, optionally substituted alkoxy, or R 12 i i 19
- R 11 and R are each independently optionally substituted alkyl or a cargo molecule, or R 1 is a cargo molecule;
- R 2 is H, optionally substituted alkyl, or a cargo molecule
- R 3 is H or optionally substituted alkyl
- R 4 is H or optionally substituted alkyl
- R 5 is H or optionally substituted alkyl
- R 6 is selected from the group consisting of H, optionally substituted alkyl, optionally substituted alkoxy, halo, optionally substituted amino, or a cargo molecule;
- Q is optionally substituted aryl or optionally substituted alkylene
- X is O, CR 8 R 9 , NR 8 ; wherein R 8 is selected from H, optionally substituted alkyl, or R 8 is taken together with Rx or Ry to form a 4-, 5-, 6-, 7-, 8- or 9-membered ring, and R 9 is H or optionally substituted alkyl;
- Rx and Ry are each independently H, optionally substituted alkyl, a cargo molecule or Rx and Ry may be taken together to form a double bond with R 10 , wherein R 10 is H, optionally substituted alkyl, or R 10 may be taken together with X and the atoms to which it is attached to form a 4-, 5-, 6-, 7-, 8, or 9-membered ring; wherein at least one of R 1 , R 2 , R 6 , R 11 , R 12 , Rx and Ry comprise a cargo molecule; and wherein when Q is optionally substituted alkylene and the length of the optionally substituted alkylene chain represented by Q is 3 carbons, then R 1 is
- the compound of Formula I is a compound of Formula la: la, wherein R 18 is selected from the group consisting of H, optionally substituted alkyl, optionally substituted alkoxy, halo, -NR 19 R 20 , wherein R 19 and R 20 are each independently H or optionally substituted alkyl.
- the compound of Formula I is a compound of Formula lb:
- the compound of Formula I is a compound of Formula Ic:
- the compound of Formula I is a compound of Formula Id:
- R 18 is selected from the group consisting of H, optionally substituted alkyl, optionally substituted alkoxy, halo, -NR 19 R 20 , wherein R 19 and R 20 are each independently H or optionally substituted alkyl.
- Q is wherein R 13 is selected from the group consisting of H, OH, optionally substituted alkyl, optionally substituted alkoxy, halo, and optionally substituted amino.
- R 15 and R 16 are each independently H,
- R 17 is optionally substituted alkyl, or optionally substituted alkyl; and n is an integer from 1 to 10. In some embodiments, n is 4. In further embodiments of Formula I, Q is NH 2 j n further embodiments of Formula some embodiments, n is 4. In other embodiments of Formula I, Q is Ci-Cio alkylene. In further embodiments, Q is - (CH 2 )4-.
- R 1 comprises a cargo molecule. In further embodiments, of Formula I, R 1 comprises at least one polyethylene glycol (PEG) unit and a cargo molecule. In some embodiments of Formula I, R 1 comprises between 1 and 10 PEG units. In further embodiments, R 1 comprises 5 PEG units.
- PEG polyethylene glycol
- R 6 and R 7 are both H. In some embodiments of Formula I, R 3 , R 4 , and R 5 are all H.
- an av[36 integrin ligand disclosed herein can be conjugated to one or more (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30; or 1 to 30, 1 to 25, 1 to 20, 1 to 15, 1 to 10, 1 to 5, 5 to 30, 5 to
- cargo molecules e.g., any of the cargo molecules described herein or known in the art.
- more than one av[36 integrin ligand disclosed herein can be conjugated to one cargo molecule (e.g., any of the cargo molecules described herein or known in the art).
- the av[36 integrin ligands disclosed herein are optionally conjugated to one or more cargo molecules via a linking group, such as, for example, a polyethylene glycol (PEG) group.
- a linking group such as, for example, a polyethylene glycol (PEG) group.
- the av[36 integrin ligands disclosed herein are optionally conjugated to one or more cargo molecules via a scaffold that includes at least one attachment point for each ligand and at least one attachment point for each cargo molecule.
- the av[36 integrin ligands comprise, consist of, or consist essentially of, one cargo molecule.
- the av[36 integrin ligands comprise, consist of, or consist essentially of, more than one cargo molecule.
- the av[36 integrin ligand comprises Compound 41a, 41b, 42a, 42b, 43a, 43b, 44a, 44b, 45a, 45b, 46a, 46b, 47a, 47b, 48a, 48b, 49a, 49b, 50a, 50b, 51a, 51b, 52a, 52b, 53a, 53b, 54a, 54b, 55a, 55b, 56a, 56b, 57a, 57b, 58a, 58b, 59a, 59b, 60a, or 60b.
- the invention provides a targeting ligand having the structure: or a pharmaceutically acceptable salt thereof, wherein indicates the point of connection to a cargo molecule.
- Another aspect of the invention provides a compound having the formula:
- Another aspect of the invention provides for a compound of Formula Ip:
- R 1 is optionally substituted alkyl, optionally substituted alkoxy, or i i n wherein R 11 and R are each independently optionally substituted alkyl or a linking moiety, or R 1 is a linking moiety;
- R 2 is H, optionally substituted alkyl, or a linking moiety
- R 3 is H or optionally substituted alkyl
- R 4 is H or optionally substituted alkyl
- R 5 is H or optionally substituted alkyl
- R 6 is selected from the group consisting of H, optionally substituted alkyl, optionally substituted alkoxy, halo, optionally substituted amino, or a linking moiety;
- Q is optionally substituted aryl or optionally substituted alkylene
- X is O, CR 8 R 9 , NR 8 ; wherein R 8 is selected from H, optionally substituted alkyl, or R 8 is taken together with Rx or Ry to form a 4-, 5-, 6-, 7-, 8- or 9-membered ring, and R 9 is H or optionally substituted alkyl;
- Rx and Ry are each independently H, optionally substituted alkyl, a linking moiety or Rx and Ry may be taken together to form a double bond with R 10 , wherein R 10 is H, optionally substituted alkyl, or R 10 may be taken together with X and the atoms to which it is attached to form a 4-, 5-, 6-, 7-, 8, or 9-membered ring; wherein at least one of R 1 , R 2 , R 6 , R 11 , R 12 , Rx and Ry comprise a linking moiety; and wherein when Q is optionally substituted alkyl and the length of the optionally substituted alkyl chain represented by Q is 3 carbons, then R 1 is
- the linking moiety comprises a functional group selected from the group consisting of: azide, ester, carbamate, alkene, alcohol, amine, amide, carbonate, and alkyne. In some embodiments of Formula Ip, the linking moiety comprises an azide.
- Another aspect of the invention provides compounds that may be precursors for compounds of Formula I.
- Example compounds of these precursors have the formula:
- any of the av[36 integrin ligands disclosed herein can be linked to a cargo molecule, a linking moiety, and/or a protected linking moiety.
- a linking moiety can be used to facilitate conjugation of the av[36 integrin ligand to a cargo molecule.
- the av[36 integrin ligands disclosed herein can increase targeting of a cargo molecule to an av[36 integrin or to a cell expressing an av[36 integrin.
- a cargo molecule can be, but is not limited to, a pharmaceutically active ingredient or compound, a prodrug, or another substance with known therapeutic or diagnostic benefit.
- a cargo molecule can be, but is not limited to, a small molecule, an antibody, an antibody fragment, an immunoglobulin, a monoclonal antibody, a label or marker, a lipid, a natural or modified oligonucleotide-based compound (e.g., an antisense oligonucleotide or an RNAi agent), a natural or modified nucleic acid, a peptide, an aptamer, a polymer, a polyamine, a protein, a toxin, a vitamin, a polyethylene glycol, a hapten, a digoxigenin, a biotin, a radioactive atom or molecule, or a fluorophore.
- a natural or modified oligonucleotide-based compound e.g., an antisense oligonucleotide or an RNAi agent
- a natural or modified nucleic acid e.g., an antisense oligonucleot
- a cargo molecule includes a pharmaceutically active ingredient or a prodrug. In some embodiments, a cargo molecule includes an oligonucleotide-based compound as a pharmaceutically active ingredient. In some embodiments, a cargo molecule includes an RNAi agent as a pharmaceutically active ingredient.
- alkyl refers to a saturated aliphatic hydrocarbon group, straight chain or branched, having from 1 to 10 carbon atoms unless otherwise specified. For example, “C1-C6 alkyl” includes alkyl groups having 1, 2, 3, 4, 5, or 6 carbons in a linear or branched arrangement.
- Non-limiting examples of alkyl groups include methyl, ethyl, iso- propyl, terl-butyl, w-hexyl.
- aminoalkyl refers to an alkyl group as defined above, substituted at any position with one or more amino groups as permitted bynormal valency.
- acid amino groups may be unsubstituted, monosubstituted, or di-substituted.
- Non-limiting examples of aminoalkyl groups include aminomethyl, dimethylaminomethyl, and 2-aminoprop-l-yl.
- cycloalky 1 means a saturated or unsaturated nonaromatic hydrocarbon ring group having from 3 to 14 carbon atoms, unless otherwise specified.
- Nonlimiting examples of cycloalkyl groups include, but are not limited to, cyclopropyl, methylcyclopropyl, 2,2-dimethyl-cyclobutyl, 2-ethyl-cyclopentyl, and cyclohexyl.
- Cycloalkyls may include multiple spiro- or fused rings. Cycloalkyl groups are optionally mono-, di-, tri-, tetra- , or penta-substituted on any position as permitted by normal valency.
- cycloalkydene refers to a divalent radical of a cycloalkyl group as described herein.
- Cycloalkylene is a subset of cycloalkyl, referring to the same residues as cycloalkyl, but having two points of substitution. Examples of cycloalkylene include cyclopropylene, 1 ,4-cyclohexylene, , and 1,5-cyclooxylene . Cycloalkylene groups are optionally mono-, di-, tri-, tetra-, or penta- substituted on any position as permitted by normal valency. Cycloalkylene groups may mono- , di-, or tri-cyclic.
- alkenyl refers to a non-aromatic hydrocarbon radical, straight, or branched, containing at least one carbon-carbon double bond, and having from 2 to 10 carbon atoms unless otherwise specified. Up to five carbon-carbon double bonds may be present in such groups.
- Cj-Ce alkenyl is defined as an alkenyl radical having from 2 to 6 carbon atoms. Examples of alkenyl groups include, but are not limited to, ethenyl, propenyl, butenyl, and cyclohexenyl.
- the straight, branched, or cyclic portion of the alkenyl group may contain double bonds and is optionally mono-, di-, tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- cycloalkenyl means a monocyclic hydrocarbon group having the specified number of carbon atoms and at least one carbon-carbon double bond.
- alkynyl refers to a hydrocarbon radical, straight or branched, containing from 2 to 10 carbon atoms, unless otherwise specified, and containing at least one carbon-carbon triple bond. Up to 5 carbon-carbon triple bonds may be present.
- C2-C6 alkynyl means an alkynyl radical having from 2 to 6 carbon atoms.
- alkynyl groups include, but are not limited to, ethynyl, 2-propynyl, and 2-butynyl.
- the straight or branched portion of the alkynyl group may be optionally mono-, di-, tri-, tetra-, or pentasubstituted on any position as permitted by normal valency.
- alkoxy] refers to -O-alkyl radical having the indicated number of carbon atoms.
- C1-6 alkoxy is intended to include Ci, C2, C?,, C-4, C5, and C6 alkoxy groups.
- C1-8 alkoxy is intended to include Ci, C2, C3, C4, Cs, Ce, C7, and Cs alkoxy groups.
- alkoxy examples include, but are not limited to, methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, s-butoxy, t-butoxy, n-pentoxy, s-pentoxy, n-heptoxy, and n- octoxy.
- keto refers to any alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, heteroaryl, or aryl group as defined herein attached through a carbonyl bridge.
- keto groups include, but are not limited to, alkanoyl (e.g., acetyl, propionyl, butanoyl, pentanoyl, or hexanoyl), alkenoyl (e.g., acryloyl) alkynoyl (e.g., ethynoyl, propynoyl, butynoyl, pentynoyl, or hexynoyl), aryloyl (e.g., benzoyl), heteroaryloyl (e.g., pyrroloyl, imidazoloyl, quinolinoyl, or pyridinoyl).
- alkanoyl e.g., acetyl, propionyl, butanoyl, pentanoyl, or hexanoyl
- alkenoyl e.g., acryloyl
- alkoxycarbonyl refers to any alkoxy group as defined above attached through a carbonyl bridge (i.e., -C(O)O-alkyl).
- alkoxy carbonyl groups include, but are not limited to, methoxycarbonyl, ethoxycarbonyl, iso-propoxycarbonyl, n- propoxy carbonyl, t-butoxy carbonyl, benzyloxycarbonyl, or n-pentoxy carbonyl.
- aryloxycarbonyl refers to any aryl group as defined herein attached through an oxycarbonyl bridge (i.e., -C(O)O-aryl).
- aryloxycarbonyl groups include, but are not limited to, phenoxy carbonyl and naphthyloxy carbonyl.
- heteroaryloxycarbonyl refers to any heteroaryl group as defined herein attached through an oxycarbonyl bridge (i.e., -C(O)O-heteroaryl).
- heteroaryloxycarbonyl groups include, but are not limited to, 2-pyridyl oxy carbonyl, 2- oxazolyloxycarbonyl, 4-thiazolyloxycarbonyl, or pyrimidinyloxy carbonyl.
- aryl or “aromatic” means any stable monocyclic or polycyclic carbon ring of up to 6 atoms in each ring, wherein at least one ring is aromatic.
- ary l groups include, but are not limited to, phenyl, naphthyl, anthracenyl, tetrahydronaphthyl, indanyl, and biphenyl. In cases where the aryl substituent is bicyclic and one ring is nonaromatic, it is understood that attachment is via the aromatic ring.
- Aryl groups are optionally mono-, di-, tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- ary lene refers to a divalent radical of an aryl group as described herein.
- Ary lene is a subset of aryl, referring to the same residues as aryl, but having two points of substitution.
- Examples of arylene include phenylene, which refers to a divalent phenyl group.
- Arylene groups are optionally mono-, di-, tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- halo refers to a halogen radical.
- halo may refer to a fluorine (F), chlorine (Cl), bromine (Br), or an iodine (I) radical.
- heteroaryl represents a stable monocyclic or polycyclic ring of up to 7 atoms in each ring, wherein at least one ring is aromatic and contains from 1 to 4 heteroatoms selected from the group consisting of O, N, and S.
- heteroaryl groups include, but are not limited to, acridinyl, carbazolyl, cinnolinyl, quinoxalinyl, pyrrazolyl, indolyl, benzotriazolyl, furanyl, thienyl, benzothienyl, benzofuranyl, benzimidazolonyl, benzoxazolonyl, quinolinyl, isoquinolinyl, dihydroisoindolonyl, imidazopyridinyl, isoindolonyl, indazolyl, oxazolyl, oxadiazolyl, isoxazolyl, indolyl, pyrazinyl, pyridazinyl, pyridinyl, pyrimidinyl, pyrrolyl, and tetrahydroquinoline.
- Heteroaryl is also understood to include the N-oxide derivative of any nitrogen-containing heteroaryl. In cases where the heteroaryl substituent is bicyclic and one ring is non-aromatic or contains no heteroatoms, it is understood that attachment is via the aromatic ring or via the heteroatom containing ring. Heteroaryl groups are optionally mono-, di-, tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- heteroarylene refers to a divalent radical of a heteroaryl group as described herein. Heteroarylene is a subset of heteroaryl, referring to the same residues as heteroaryl, but having two points of substitution. Examples of heteroaryl include pyridinylene, pyrimidinylene, and pyrrolylene. Heteroarylene groups are optionally mono-, di- , tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- heterocycle means a 3- to 14-membered aromatic or nonaromatic heterocycle containing from I to 4 heteroatoms selected from the group consisting of O, N, and S, including polycyclic groups.
- heterocyclic is also considered to be synonymous with the terms “heterocycle” and “heterocyclyl” and is understood as also having the same definitions set forth herein.
- Heterocyclyl includes the above mentioned heteroaryls, as well as dihydro and tetrahydro analogs thereof.
- heterocyclyl groups include, but are not limited to, azetidinyl, benzoimidazolyl, benzofuranyl, benzofurazanyl, benzopyrazolyl, benzotriazolyl, benzothiophenyl, benzoxazolyl, carbazolyl, carbolinyl, cinnolinyl, furanyl, imidazolyl, indolinyl, indolyl, indolazinyl, indazolyl, isobenzofuranyl, isoindolyl, isoquinolyl, isothiazolyl, isoxazolyl, naphthpyridinyl, oxadiazolyl, oxooxazolidinyl, oxazolyl, oxazoline, oxopiperazinyl, oxopyrrolidinyl, oxomorpholinyl, isoxazoline, oxetanyl, pyranyl,
- Heterocyclyl groups are optionally mono-, di-, tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- heterocycloalkyl means a 3- to 14-membered nonaromatic heterocycle containing from 1 to 4 heteroatoms selected from the group consisting of O, N, and S, including polycyclic groups.
- heterocyclyl groups include, but are not limited to, azetidinyl, oxopiperazinyl, oxopyrrolidinyl, oxomorpholinyl, oxetanyl, pyranyl, pyridinonyl, pyrimidinonyl, tetrahydropvranyl, tetrahydrofuranyl, tetrahydrothiopyranyl, tetrahydroisoquinolinyl, 1 ,4-dioxanyl, hexahydroazepinyl, piperazinyl, piperidinyl, pyrrolidinyl, morpholinyl, thiomorpholinyl, dihydrofuranyl, dihydroimidazolyl, dihydroisooxazolyl, dihydroisothiazolyl, dihydrooxadiazolyl, dihydrooxazolyl, dihydropyrazinyl, di
- heterocycloalkyl substituent can occur via a carbon atom or via a heteroatom.
- Heterocyclyl groups are optionally mono-, di-, tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- heterocycloalkylene refers to a divalent radical of a heterocycloalkyl group as described herein.
- Heteroycloalkylene is a subset of heterocycloalkyl, referring to the same residues as heterocycloalkyl, but having two points of substitution.
- Examples of heterocycloalkylene include piperidinylene, azetidinylene, and tetrahydrofuranylene.
- Heterocycloalkylene groups are optionally mono-, di-, tri-, tetra-, or penta-substituted on any position as permitted by normal valency.
- the terms “treat,” “treatment,” and the like mean the methods or steps taken to provide relief from or alleviation of the number, severity, and/or frequency of one or more symptoms of a disease in a subject.
- “treat” and “treatment” may include the prevention, management, prophylactic treatment, and/or inhibition of the number, severity, and/or frequency of one or more symptoms of a disease in a subject.
- introducing into a cell when referring to an RNAi agent, means functionally delivering the RNAi agent into a cell.
- functional delivery means that delivering the RNAi agent to the cell in a manner that enables the RNAi agent to have the expected biological activity, e.g., sequence-specific inhibition of gene expression.
- isomers refers to compounds that have identical molecular formulae, but that differ in the nature or the sequence of bonding of their atoms or in the arrangement of their atoms in space. Isomers that differ in the arrangement of their atoms in space are termed “stereoisomers.” Stereoisomers that are not mirror images of one another are termed “diastereoisomers,” and stereoisomers that are non-superimposable mirror images are termed “enantiomers,” or sometimes optical isomers.
- a carbon atom bonded to four nonidentical substituents is termed a “chiral center.”
- the compounds described herein contain olefinic double bonds or other centers of geometric asymmetry' for which the isomeric structure is not specifically defined, it is intended that the compounds can include both E and Z geometric isomers individually or in a mixture.
- the compounds of Formula I or their pharmaceutically acceptable salts, for example, are meant to include all possible isomers, as well as their racmeic and optically pure forms. Likewise, unless expressly stated otherwise, all tautomeric forms are also intended to be included.
- a linking group is one or more atoms that connects one molecule or portion of a molecule to another to second molecule or second portion of a molecule.
- the terms linking group and spacers are sometimes used interchangeably.
- the term scaffold is sometimes used interchangeably with a linking group.
- a linking group can include a peptide-cleavable linking group.
- a linking group can include or consist of the peptide phenylalanine-citrulline- phenylalanine-proline.
- a linking group can include or consist of a PEG group.
- the term “linked” when referring to the connection between two molecules means that two molecules are joined by a covalent bond or that two molecules are associated via noncovalent bonds (e.g., hydrogen bonds or ionic bonds).
- the association between the two different molecules has a KD of less than 1 x 10' 4 M (e.g., less than 1 x 10' 5 M, less than 1 x 10' 6 M, or less than 1 x 10' 7 M) in physiologically acceptable buffer (e.g., phosphate buffered saline).
- physiologically acceptable buffer e.g., phosphate buffered saline.
- the term linked as used herein may refer to the connection between a first compound and a second compound either with or without any intervening atoms or groups of atoms.
- the compounds and compositions disclosed herein may have certain atoms (e.g., N, O, or S atoms) in a protonated or deprotonated state, depending upon the environment in which the compound or composition is placed. Accordingly, as used herein, the structures disclosed herein envisage that certain functional groups, such as, for example, OH, SH, or NH, may be protonated or deprotonated. The disclosure herein is intended to cover the disclosed compounds and compositions regardless of their state of protonation based on the pH of the environment, as would be readily understood by the person of ordinary skill in the art.
- Structures may be depicted as having a bond “floating” over a ring structure to indicate binding to any carbon or heteroatom on the ring as permitted by valency.
- the structure indicates that R may replace any hydrogen atom at any of the five available positions on the ring.
- “Floating” bonds may also be used in bicyclic structures to indicate a bond to any position on either ring of the bicycle as permitted by valency. In the case of bicycles, the bond will be shown “floating” over both rings, for example, indicates that R may replace any hydrogen atom at any of the seven available positions on the ring.
- the phrase “consisting of’ excludes any element, step, or ingredient not specified in the claim, hen used in a claim herein, the phrase “consisting essentially of’ limits the scope of a claim to the specified materials or steps and those that do not materially affect the basic and novel characteristic(s) of the claimed invention.
- Described herein is the use of the described av[36 integrin ligands to target and deliver a cargo molecule to a cell that expresses av[36 integrin.
- the cargo molecule can be delivered to a cell in vitro, in situ, ex vivo, or in vivo.
- an av[36 integrin ligand disclosed herein can be conjugated to one or more (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
- cargo molecules e.g., any of the cargo molecules described herein or known in the art.
- more than one av[36 integrin ligand disclosed herein can be conjugated to one cargo molecule (e.g., any of the cargo molecules described herein or known in the art).
- the av[36 integrin ligands disclosed herein are optionally conjugated to one or more cargo molecules via a linking group, such as, for example, a polyethylene glycol (PEG) group.
- a linking group such as, for example, a polyethylene glycol (PEG) group.
- the av[36 integrin ligands disclosed herein are optionally conjugated to one or more cargo molecules via a scaffold that includes at least one attachment point for each ligand and at least one attachment point for each cargo molecule.
- the av[36 integrin ligands comprise, consist of, or consist essentially of, one cargo molecule.
- the av[36 integrin ligands comprise, consist of, or consist essentially of, more than one cargo molecule.
- Any of the av[36 integrin ligands disclosed herein can be linked to a cargo molecule, a linking moiety, and/or a protected linking moiety.
- a linking moiety can be used to facilitate conjugation of the av[36 integrin ligand to a cargo molecule.
- the av[36 integrin ligands disclosed herein can increase targeting of a cargo molecule to an av[36 integrin or to a cell expressing an av[36 integrin.
- a cargo molecule can be, but is not limited to, a pharmaceutically active ingredient or compound, a prodrug, or another substance with known therapeutic benefit.
- a cargo molecule can be, but is not limited to, a small molecule, an antibody, an antibody fragment, an immunoglobulin, a monoclonal antibody, a label or marker, a lipid, a natural or modified oligonucleotide-based compound (e.g., an antisense oligonucleotide or an RNAi agent), a natural or modified nucleic acid, a peptide, an aptamer, a polymer, a polyamine, a protein, a toxin, a vitamin, a polyethylene glycol, a hapten, a digoxigenin, a biotin, a radioactive atom or molecule, or a fluorophore.
- a natural or modified oligonucleotide-based compound e.g., an antisense oligonucleotide or an RNAi agent
- a natural or modified nucleic acid e.g., an antisense oligonucleot
- a cargo molecule includes a pharmaceutically active ingredient or a prodrug. In some embodiments, a cargo molecule includes an oligonucleotide-based compound as a pharmaceutically active ingredient. In some embodiments, a cargo molecule includes an RNAi agent as a pharmaceutically active ingredient.
- the invention provides for a structure comprising an av[36 integrin ligand as described herein, a linking group, and a scaffold, wherein the scaffold is bound to a cargo molecule.
- the structure may comprise the ligand in monodentate form.
- the structure may comprise the ligand in bidentate form.
- the structure may comprise the ligand in tridentate form.
- the structure may comprise the ligand in tetradentate form.
- one or more av[36 integrin ligands may be linked to one or more cargo molecules.
- only one av[36 integrin ligand is conjugated to a cargo molecule (referred to herein as a “monodentate” or “monovalent” ligand).
- two av[36 integrin ligands are conjugated to a cargo molecule (referred to herein as a “bidentate” or “divalent” ligand).
- three av[36 integrin ligands are conjugated to a cargo molecule (referred to herein as a “tridentate” or “trivalent” ligand).
- av[36 integrin ligands are conjugated to a cargo molecule (referred to herein as a “tetradentate” or “tetravalent” ligand). In some embodiments, more than four av[36 integrin ligands are conjugated to a cargo molecule. [00103] In some embodiments, where only one av[36 integrin ligand is conjugated to a cargo molecule (referred to herein as a “monodentate” ligand), the av[36 integrin ligand may be conjugated directly to the cargo molecule.
- an av[36 integrin ligand disclosed herein can be conjugated to a cargo molecule via a scaffold or other linker structure.
- the av[36 integrin ligands disclosed herein include one or more scaffolds. Scaffolds, also sometimes refrred to in the art as linking groups or linkers, can be used to facilitate the linkage of one or more cargo molecules to one or more av[36 integrin ligands disclosed herein.
- Useful scaffolds compatible with the ligands disclosed herein are generally known in the art.
- Non-limiting examples of scaffolds that can be used with the av[36 integrin ligands disclosed herein include, but are not limited to polymers and polyamino acids (e.g., bis-glutamic acid, poly-L-lysine, etc.).
- scaffolds may include cysteine linkers or groups, DBCO-PEG1-24-NHS, Propargyl-PEGi-24-NHS, and/or multi dentate DBCO and/or propargyl moieties.
- Linking moieties are well known in the art and provide for formation of covalent linkages between two molecules or reactants.
- Suitable linking moieties for use in the scope of the inventions herein include, but are not limited to: amino groups, amide groups, carboxylic acid groups, azides, alkynes, propargyl groups, BCN(biclclo[6.1.0]nonyne, DBCO(dibenzocyclooctyne) thiols, maleimide groups, aminooxy groups, N- hydroxysuccinimide (NHS) or other activated ester (for example, PNP, TFP, PFP), bromo groups, aldehydes, carbonates, tosylates, tetrazines, trans-cyclooctene (TCO), hydrazides, hydroxyl groups, disulfides, and orthopyridyl disulfide groups.
- linking moieties can facilitate conjugation of an av[36 integrin ligand disclosed herein to a cargo molecule.
- Conjugation reactions are well known in the art and provide for formation of covalent linkages between two molecules or reactants. Suitable conjugation reactions for use in the scope of the inventions herein include, but are not limited to, amide coupling reaction, Michael addition reaction, hydrazone formation reaction and click chemistry cycloaddition reaction.
- the av[36 integrin targeting ligands disclosed herein are synthesized as a tetrafluorophenyl (TFP) ester, which can be displaced by a reactive amino group to attach a cargo molecule.
- the integrin targeting ligands disclosed herein are synthesized as an azide, which can be conjugated to a propargyl or DBCO group, for example, via click chemistry cycloaddition reaction, to attach a cargo molecule.
- Protected linking moieties are also commonly used in the art.
- a protecting group provides temporary chemical transformation of a linking moiety into a group that does not react under conditions where the non-protected group reacts, e.g, to provide chemo-selectivity in a subsequent chemical reaction.
- Suitable protected linking moieties for use in the scope of the inventions herein include, but are not limited to, BOC groups (t-butoxycarbonyl), Fmoc (9- fluorenylmethoxy carbonyl), carboxy benzyl (CBZ) groups, benzyl esters, and PBF (2, 2, 4,6,7- pentamethyldihydrobenzofuran-5-sulfonyl).
- Cargo Molecules (including RNAi agents)
- a cargo molecule is any molecule which, when detached from the av[36 integrin ligands described herein, would have a desirable effect on a cell comprising an av[36 integrin receptor.
- a cargo molecule can be, but is not limited to, a pharmaceutical ingredient, a drug product, a prodrug, a substance with a known therapeutic benefit, a small molecule, an antibody, an antibody fragment, an immunoglobulin, a monoclonal antibody, a label or marker, a lipid, a natural or modified nucleic acid or polynucleotide, a peptide, a polymer, a polyamine, a protein, an aptamer, a toxin, a vitamin, a PEG, a hapten, a digoxigenin, a biotin, a radioactive atom or molecule, or a fluorophore.
- one or more cargo molecules are e.g., the same or different cargo molecules.
- the one or more cargo molecules is a pharmaceutical ingredient or pharmaceutical composition.
- the one or more cargo molecules is an oligonucleotide-based compound.
- an “oligonucleotide-based compound” is a nucleotide sequence containing about 10-50 (e.g., 10 to 48, 10 to 46, 10 to 44, 10 to 42, 10 to 40, 10 to 38, 10 to 36, 10 to 34, 10 to 32, 10 to 30, 10 to 28, 10 to 26, 10 to 24,
- an oligonucleotide-based compound has a nucleobase sequence that is at least partially complementary to a coding sequence in an expressed target nucleic acid or target gene within a cell.
- the oligonucleotide-based compounds upon delivery to a cell expressing a gene, are able to inhibit the expression of the underlying gene, and are referred to herein as “expression-inhibiting oligonucleotide-based compounds.” The gene expression can be inhibited in vitro or in vivo.
- oligonucleotide-based compounds include, but are not limited to: single-stranded oligonucleotides, single-stranded antisense oligonucleotides, short interfering RNAs (siRNAs), double-strand RNAs (dsRNA), micro RNAs (miRNAs), short hairpin RNAs (shRNA), ribozymes, interfering RNA molecules, and dicer substrates.
- siRNAs short interfering RNAs
- dsRNA double-strand RNAs
- miRNAs micro RNAs
- shRNA short hairpin RNAs
- ribozymes interfering RNA molecules, and dicer substrates.
- an oligonucleotide-based compound is a single-stranded oligonucleotide, such as an antisense oligonucleotide.
- an oligonucleotide-based compound is a doublestranded oligonucleotide. In some embodiments, an oligonucleotide-based compound is a double-stranded oligonucleotide that is an RNAi agent.
- the one or more cargo molecules is/are an “RNAi agent,” which as defined herein is a composition that contains an RNA or RNA-like (e.g., chemically modified RNA) oligonucleotide molecule that is capable of degrading or inhibiting translation of messenger RNA (mRNA) transcripts of a target mRNA in a sequence specific manner.
- RNAi agents may operate through the RNA interference mechanism (i.e., inducing RNA interference through interaction with the RNA interference pathway machinery (RNA- induced silencing complex or RISC) of mammalian cells), or by any alternative mechanism(s) or pathway(s).
- RNAi agents While it is believed that RNAi agents, as that term is used herein, operate primarily through the RNA interference mechanism, the disclosed RNAi agents are not bound by or limited to any particular pathway or mechanism of action.
- RNAi agents disclosed herein are comprised of a sense strand and an antisense strand, and include, but are not limited to: short (or small) interfering RNAs (siRNAs), double-strand RNAs (dsRNA), micro RNAs (miRNAs), short hairpin RNAs (shRNA), and dicer substrates.
- the antisense strand of the RNAi agents described herein is at least partially complementary to the mRNA being targeted.
- RNAi agents can include one or more modified nucleotides and/or one or more non- phosphodiester linkages.
- RNAi agents can be comprised of at least a sense strand (also referred to as a passenger strand) that includes a first sequence, and an antisense strand (also referred to as a guide strand) that includes a second sequence.
- the length of an RNAi agent sense and antisense strands can each be 16 to 49 nucleotides in length.
- the sense and antisense strands of an RNAi agent are independently 17 to 26 nucleotides in length.
- the sense and antisense strands are independently 19 to 26 nucleotides in length.
- the sense and antisense strands are independently 21 to 26 nucleotides in length.
- the sense and antisense strands are independently 21 to 24 nucleotides in length.
- the sense and antisense strands can be either the same length or different lengths.
- the RNAi agents include an antisense strand sequence that is at least partially complementary to a sequence in the target gene, and upon delivery to a cell expressing the target, an RNAi agent may inhibit the expression of one or more target genes in vivo or in vitro.
- Oligonucleotide-based compounds generally, and RNAi agents specifically, may be comprised of modified nucleotides and/or one or more non-phosphodiester linkages.
- a “modified nucleotide” is a nucleotide other than a ribonucleotide (2'-hydroxyl nucleotide).
- at least 50% e.g., at least 60%, at least 70%, at least 80%, at least 90%, at least 95%, at least 97%, at least 98%, at least 99%, or 100%
- at least 50% e.g., at least 60%, at least 70%, at least 80%, at least 90%, at least 95%, at least 97%, at least 98%, at least 99%, or 100%
- the nucleotides are modified nucleotides.
- modified nucleotides include, but are not limited to, deoxyribonucleotides, nucleotide mimics, abasic nucleotides, 2'-modified nucleotides, 3' to 3' linkages (inverted) nucleotides, non-natural base-comprising nucleotides, bridged nucleotides, peptide nucleic acids, 2', 3 '-seco nucleotide mimics (unlocked nucleobase analogues, locked nucleotides, 3'-O-methoxy (2' intemucleoside linked) nucleotides, 2'-F-Arabino nucleotides, 5'-Me, 2'-fluoro nucleotide, morpholino nucleotides, vinyl phosphonate deoxyribonucleotides, vinyl phosphonate containing nucleotides, and cyclopropyl phosphonate containing nucleotides.
- 2'-modified nucleotides include, but are not limited to, 2'-O-methyl nucleotides, 2'-deoxy-2'-fluoro nucleotides, 2'-deoxy nucleotides, 2'-methoxyethyl (2'-O-2- methoxylethyl) nucleotides, 2'-amino nucleotides, and 2'-alkyl nucleotides.
- one or more nucleotides of an oligonucleotide-based compound may be linked by non-standard linkages or backbones (i.e., modified intemucleoside linkages or modified backbones).
- a modified intemucleoside linkage may be a non-phosphate-containing covalent intemucleoside linkage.
- Modified intemucleoside linkages or backbones include, but are not limited to, 5'-phosphorothioate groups, chiral phosphorothioates, thiophosphates, phosphorodithioates, phosphotriesters, aminoalkylphosphotriesters, alkyl phosphonates (e.g., methyl phosphonates or 3'-alkylene phosphonates), chiral phosphonates, phosphinates, phosphoramidates (e.g., 3'-amino phosphoramidate, aminoalkylphosphoramidates, or thionophosphoramidates), thionoalkyl-phosphonates, thionoalkylphosphotriesters, morpholino linkages, boranophosphates having normal 3'-5' linkages, 2'-5' linked analogs of boranophosphates, or boranophosphates having inverted polarity wherein the adjacent pairs of nucleoside units are linked 3'-5' to 5
- the cargo molecule is an RNAi agent for inhibiting myostatin gene expression.
- RNAi agent sense strands and antisense strands may be synthesized and/or modified by methods known in the art. Additional disclosures related to RNAi agents may be found, for example, in the disclosure of modifications may be found, for example, in International Patent Application No. PCT/US2017/045446 to Arrowhead Pharmaceuticals, Inc., which also is incorporated by reference herein in its entirety.
- the one or more cargo molecule(s) can include or consist of a PEG moiety that can acts as a pharmacokinetic and/or pharmacodynamic (PK/PD) modulator.
- the one or more cargo molecules can include a PEG moiety having about 20-900 ethylene oxide (CH2-CH2-O) units (e.g., 20 to 850, 20 to 800, 20 to 750, 20 to 700, 20 to 650, 20 to 600, 20 to 550, 20 to 500, 20 to 450, 20 to 400, 20 to 350, 20 to 300, 20 to 250, 20 to 200, 20 to 150, 20 to 100, 20 to 75, 20 to 50, 100 to 850, 100 to 800, 100 to 750,
- CH2-CH2-O ethylene oxide
- 300 to 400 300 to 350, 350 to 900, 350 to 850, 350 to 800, 350 to 750, 350 to 700, 350 to 650,
- 550 to 900 550 to 850, 550 to 800, 550 to 750, 550 to 700, 550 to 650, 550 to 600, 600 to 900,
- 650 to 750 650 to 700, 700 to 900, 700 to 850, 700 to 800, 700 to 750, 750 to 900, 750 to 850,
- the one or more cargo molecule(s) consist of a PEG moiety having approximately 455 ethylene oxide units (about 20 kilodalton (kDa) molecular weight). In some embodiments, a PEG moiety has a molecular weight of about 2 kilodaltons. In some embodiments, a PEG moiety has a molecular weight of about 20 kilodaltons. In some embodiments, a PEG moiety has a molecular weight of about 40 kilodaltons.
- the PEG moieties described herein may be linear or branched.
- the PEG moieties may be discrete (monodispersed) or non-discrete (polydispersed). PEG moieties for use as a PK enhancing cargo molecule may be purchase commercially.
- the one or more cargo molecule(s) include a PEG moiety that can act as a PK/PD modulator or enhancer, as well as a different cargo molecule, such as a pharmaceutically active ingredient or compound.
- the described av[36 integrin ligands include salts or solvates thereof.
- Solvates of an av[36 integrin ligand is taken to mean adductions of inert solvent molecules onto the av[36 integrin ligand which form owing to their mutual attractive force.
- Solvates are, for example, mono- or dihydrates or addition compounds with alcohols, such as, for example, with methanol or ethanol.
- Free amino groups or free hydroxyl groups can be provided as substituents of av[36 integrin ligands with corresponding protecting groups.
- the av[36 integrin ligands also include, e.g., derivatives, i.e., av[36 integrin ligands modified with, for example, alkyl or acyl groups, sugars or oligopeptides, which are cleaved either in vitro or in an organism.
- an av[36 integrin ligand disclosed herein facilitates the delivery of a cargo molecule into the cytosol of a cell presenting an av[36 integrin on its surface, either through ligand-mediated endocytosis, pinocytosis, or by other means.
- an av06 integrin ligand disclosed herein facilitates the delivery of a cargo molecule to the plasma membrane of a cell presenting an av[36 integrin.
- compositions that include, consist of, or consist essentially of, one or more of the av[36 integrin ligands disclosed herein.
- a “pharmaceutical composition” comprises a pharmacologically effective amount of an Active Pharmaceutical Ingredient (API), and optionally one or more pharmaceutically acceptable excipients.
- Pharmaceutically acceptable excipients are substances other than the Active Pharmaceutical ingredient (API, therapeutic product) that are intentionally included in the drug delivery system. Excipients do not exert or are not intended to exert a therapeutic effect at the intended dosage. Excipients may act to a) aid in processing of the drug delivery system during manufacture, b) protect, support or enhance stability, bioavailability or patient acceptability of the API, c) assist in product identification, and/or d) enhance any other attribute of the overall safety, effectiveness, of delivery of the API during storage or use.
- a pharmaceutically acceptable excipient may or may not be an inert substance.
- Excipients include, but are not limited to: absorption enhancers, anti-adherents, anti-foaming agents, anti-oxidants, binders, buffering agents, carriers, coating agents, colors, delivery enhancers, delivery polymers, dextran, dextrose, diluents, disintegrants, emulsifiers, extenders, fillers, flavors, glidants, humectants, lubricants, oils, polymers, preservatives, saline, salts, solvents, sugars, suspending agents, sustained release matrices, sweeteners, thickening agents, tonicity agents, vehicles, water-repelling agents, and wetting agents.
- compositions described herein can contain other additional components commonly found in pharmaceutical compositions.
- the additional component is a pharmaceutically-active material.
- Pharmaceutically -active materials include, but are not limited to: anti-pruritics, astringents, local anesthetics, or anti-inflammatory agents (e.g., antihistamine, diphenhydramine, etc.), small molecule drug, antibody, antibody fragment, aptamers, and/or vaccine.
- compositions may also contain preserving agents, solubilizing agents, stabilizing agents, wetting agents, emulsifiers, sweeteners, colorants, odorants, salts for the variation of osmotic pressure, buffers, coating agents, or antioxidants. They may also contain other agent with a known therapeutic benefit.
- compositions can be administered in a number of ways depending upon whether local or systemic treatment is desired and upon the area to be treated. Administration can be made by any way commonly known in the art, such as, but not limited to, topical (e.g., by a transdermal patch), pulmonary (e.g., by inhalation or insufflation of powders or aerosols, including by nebulizer, intratracheal, intranasal), epidermal, transdermal, oral or parenteral.
- topical e.g., by a transdermal patch
- pulmonary e.g., by inhalation or insufflation of powders or aerosols, including by nebulizer, intratracheal, intranasal
- epidermal transdermal
- oral or parenteral e.g., oral or parenteral.
- Parenteral administration includes, but is not limited to, intravenous, intraarterial, subcutaneous, intraperitoneal or intramuscular injection or infusion; subdermal (e.g., via an implanted device), intracranial, intraparenchymal, intrathecal, and intraventricular, administration.
- the pharmaceutical compositions described herein are administered by subcutaneous injection.
- the pharmaceutical compositions may be administered orally, for example in the form of tablets, coated tablets, dragees, hard or soft gelatine capsules, solutions, emulsions or suspensions. Administration can also be carried out rectally, for example using suppositories; locally or percutaneously, for example using ointments, creams, gels, or solutions; or parenterally, for example using injectable solutions.
- compositions suitable for injectable use include sterile aqueous solutions (where water soluble) or dispersions and sterile powders for the extemporaneous preparation of sterile injectable solutions or dispersion.
- suitable carriers include physiological saline, bacteriostatic water, Cremophor ELTM (BASF, Parsippany, NJ) or phosphate buffered saline. It should be stable under the conditions of manufacture and storage and should be preserved against the contaminating action of microorganisms such as bacteria and fungi.
- the carrier can be a solvent or dispersion medium containing, for example, water, ethanol, polyol (for example, glycerol, propylene glycol, and liquid polyethylene glycol), and suitable mixtures thereof.
- the proper fluidity can be maintained, for example, by the use of a coating such as lecithin, by the maintenance of the required particle size in the case of dispersion and by the use of surfactants.
- isotonic agents for example, sugars, polyalcohols such as mannitol, sorbitol, and sodium chloride in the composition.
- Prolonged absorption of the injectable compositions can be brought about by including in the composition an agent which delays absorption, for example, aluminum monostearate and gelatin.
- Sterile injectable solutions can be prepared by incorporating the active compound in the required amount in an appropriate solvent with one or a combination of ingredients enumerated above, as required, followed by filter sterilization.
- dispersions are prepared by incorporating the active compound into a sterile vehicle which contains a basic dispersion medium and the required other ingredients from those enumerated above.
- methods of preparation include vacuum drying and freeze-drying which yields a powder of the active ingredient plus any additional desired ingredient from a previously sterile-filtered solution thereof.
- Formulations suitable for intra-articular administration can be in the form of a sterile aqueous preparation of any of the ligands described herein that can be in microcrystalline form, for example, in the form of an aqueous microcrystalline suspension.
- Liposomal formulations or biodegradable polymer systems can also be used to present any of the ligands described herein for both intra-articular and ophthalmic administration.
- the active compounds can be prepared with carriers that will protect the compound against rapid elimination from the body, such as a controlled release formulation, including implants and microencapsulated delivery systems.
- a controlled release formulation including implants and microencapsulated delivery systems.
- Biodegradable, biocompatible polymers can be used, such as ethylene vinyl acetate, polyanhydrides, polyglycolic acid, collagen, polyorthoesters, and polylactic acid. Methods for preparation of such formulations will be apparent to those skilled in the art.
- Liposomal suspensions can also be used as pharmaceutically acceptable carriers. These can be prepared according to methods known to those skilled in the art, for example, as described in U.S. Patent No. 4,522,811.
- a pharmaceutical composition can contain other additional components commonly found in pharmaceutical compositions.
- additional components include, but are not limited to: anti-pruritics, astringents, local anesthetics, or anti-inflammatory agents (e.g., antihistamine, diphenhydramine, etc.).
- anti-pruritics e.g., anti-pruritics
- astringents e.g., astringent
- local anesthetics e.g., anti-inflammatory agents
- anti-inflammatory agents e.g., antihistamine, diphenhydramine, etc.
- Medicaments containing an av[36 integrin ligand are also an object of the present invention, as are processes for the manufacture of such medicaments, which processes comprise bringing one or more compounds containing a av[36 integrin ligand, and, if desired, one or more other substances with a known therapeutic benefit, into a pharmaceutically acceptable form.
- the described av[36 integrin ligands and pharmaceutical compositions comprising av[36 integrin ligands disclosed herein may be packaged or included in a kit, container, pack, or dispenser.
- the av[36 integrin ligands and pharmaceutical compositions comprising the av[36 integrin ligands may be packaged in pre-filled syringes or vials.
- Cells, tissues, and non-human organisms that include at least one of the av[36 integrin ligands described herein is contemplated.
- the cell, tissue, or non-human organism is made by delivering the av[36 integrin ligand to the cell, tissue, or non-human organism by any means available in the art.
- the cell is a mammalian cell, including, but not limited to, a human cell.
- an av[36 ligand is conjugated to one or more non-nucleotide groups including, but not limited to, a linking group, a pharmacokinetic and/or pharmacodynamic (PK/PD) modulator, a delivery polymer, or a delivery vehicle.
- the non- nucleotide group can enhance targeting, delivery, or attachment of the cargo molecule. Examples of targeting groups and linking groups are provided in Table 6.
- the non-nucleotide group can be covalently linked to the 3' and/or 5' end of either the sense strand and/or the antisense strand.
- the RNAi agent contains a non-nucleotide group linked to the 3' and/or 5' end of the sense strand. In some embodiments, a non-nucleotide group is linked to the 5' end of an RNAi agent sense strand.
- An av[36 ligand can be linked directly or indirectly to the cargo molecule via a linker/linking group. In some embodiments, a av[36 ligand is linked to the cargo molecule via a labile, cleavable, or reversible bond or linker.
- a non-nucleotide group enhances the pharmacokinetic or biodistribution properties of an RNAi agent or conjugate to which it is attached to improve cell- or tissue-specific distribution and cell-specific uptake of the conjugate. In some embodiments, a non-nucleotide group enhances endocytosis of the RNAi agent.
- Targeting groups or targeting moieties enhance the pharmacokinetic or biodistribution properties of a cargo molecule to which they are attached to improve cellspecific (including, in some cases, organ specific) distribution and cell-specific (or organ specific) uptake of the cargo molecule.
- a targeting group may comprise an av[36 ligand as described herein.
- a targeting group comprises a linker.
- a targeting group comprises a PK/PD modulator.
- an av[36 ligand is linked to a cargo molecule using a linker, such as a PEG linker or one, two, or three abasic and/or ribitol (abasic ribose) residues, which in some instances can serve as linkers.
- Cargo molecules can be synthesized having a linking moiety, such as an amino group (also referred to herein as an amine).
- the linking moiety may be linked at the 5 '-terminus and/or the 3 '-terminus. The linking moiety can be used subsequently to attach an av[36 ligand using methods typical in the art.
- an RNAi agent is synthesized having an NH2- Ce group at the 5 '-terminus of the sense strand of the RNAi agent.
- the terminal amino group subsequently can be reacted to form a conjugate with, for example, a group that includes an av[36 integrin targeting ligand.
- an RNAi agent is synthesized having one or more alkyne groups at the 5 '-terminus of the sense strand of the RNAi agent.
- the terminal alkyne group(s) can subsequently be reacted to form a conjugate with, for example, a group that includes an av[36 integrin targeting ligand.
- a linking group is conjugated to the av[36 ligand.
- the linking group facilitates covalent linkage of the av[36 ligand to a cargo molecule, PK/PD modulator, delivery polymer, or delivery vehicle.
- Examples of linking groups include, but are not limited to: Alk-SMPT-C6, Alk-SS-C6, DBCO-TEG, Me-Alk-SS-C6, and C6-SS-Alk-Me, linking moieties such a primary amines and alkynes, alkyl groups, abasic residues/nucleotides, amino acids, tri-alkyne functionalized groups, ribitol, and/or PEG groups.
- a linker or linking group is a connection between two atoms that links one chemical group (such as an RNAi agent) or segment of interest to another chemical group (such as an av[36 ligand, PK/PD modulator, or delivery polymer) or segment of interest via one or more covalent bonds.
- a labile linkage contains a labile bond.
- a linkage can optionally include a spacer that increases the distance between the two joined atoms. A spacer may further add flexibility and/or length to the linkage.
- Spacers include, but are not be limited to, alkyl groups, alkenyl groups, alkynyl groups, aryl groups, aralkyl groups, aralkenyl groups, and aralkynyl groups; each of which can contain one or more heteroatoms, heterocycles, amino acids, nucleotides, and saccharides. Spacer groups are well known in the art and the preceding list is not meant to limit the scope of the description.
- av[36 ligands are linked to cargo molecules without the use of an additional linker.
- the av[36 ligand is designed having a linker readily present to facilitate the linkage to a cargo molecule.
- the two or more RNAi agents when two or more RNAi agents are included in a composition, can be linked to their respective targeting groups using the same linkers. In some embodiments, when two or more RNAi agents are included in a composition, the two or more RNAi agents are linked to their respective targeting groups using different linkers.
- linking groups known in the art may be used.
- HBTU (239 mg, 0.629 mmol) was added to the ice-cold solution of acid 1 (160 mg, 0.523 mmol), glycine methyl ester hydrochloride (79 mg, 0.639 mmol), HOBt 948 mg, 0.312 mmol), and 4-methylmorpholine (338 uL, 3 mmol) in DMF (10 mL). The cooling bath was removed, and the reaction mixture was stirred for 2h at RT. Water (1 mL) was added and the reaction mixture was concentrated to dryness in high vacuo. The residue was partitioned between EtOAc and water (1 : 1, 50 mL). EtOAc layer was washed twice with water.
- the reaction was quenched with saturated NaHCOs aqueous solution (20 mL), and the aqueous phase was extracted with ethyl acetate (3 x 20 mL). The organic phase was combined, dried over Na2SC>4, and concentrated. The compound was separated by CombiFlash®, and was eluted with 2-4% methanol in DCM.
- the av[36 integrin ligands can be conjugated to one or more RNAi agents useful for inhibiting the expression of one or more targeted genes.
- the av[36 integrin ligands facilitate the delivery of the RNAi agents to the targeted cells and/or tissues.
- Example 1, above described the synthesis of certain av[36 integrin ligands disclosed herein. The following describes the general procedures for the syntheses of certain av[36 integrin ligand- RNAi agent conjugates that are illustrated in the non-limiting Examples set forth herein.
- A. Synthesis of RNAi Agents RNAi agents can be synthesized using methods generally known in the art.
- RNAi agents For the synthesis of the RNAi agents illustrated in the Examples set forth herein, the sense and antisense strands of the RNAi agents were synthesized according to phosphoramidite technology on solid phase used in oligonucleotide synthesis. Depending on the scale, a MerMade96E® (Bioautomation), a MerMadel2® (Bioautomation), or an OP Pilot 100 (GE Healthcare) was used. Syntheses were performed on a solid support made of controlled pore glass (CPG, 500 A or 600 A, obtained from Prime Synthesis, Aston, PA, USA). All RNA and 2'-modified RNA phosphoramidites were purchased from Thermo Fisher Scientific (Milwaukee, WI, USA).
- the 2'-deoxy-2'- fluoro-phosphoramidites carried the same protecting groups as the 2'-O-methyl RNA amidites.
- 5 '-dimethoxytrityl-2'-O-methyl-inosine-3 '-O-(2-cyanoethyl-N,N-diisopropylamino) phosphoramidites were purchased from Glen Research (Virginia).
- the inverted abasic (3'-O- dimethoxytrityl-2'-deoxyribose-5'-O-(2-cyanoethyl-N,N-diisopropylamino) phosphoramidites were purchased from ChemGenes (Wilmington, MA, USA).
- the av[36 integrin ligands disclosed herein are conjugated to the RNAi agents by linking the components to a scaffold that includes a tri-alkyne group.
- the tri-alkyne group is added by using a tri-alkyne-containing phosphoramidite, which can be added at the 5’ terminal end of the sense strand of an RNAi agent.
- tri- alkyne-containing phosphoramidites were dissolved in anhydrous dichloromethane or anhydrous acetonitrile (50 mM), while all other amidites were dissolved in anhydrous acetonitrile (50 mM), and molecular sieves (3 A) were added.
- BTT 250 mM in acetonitrile
- ETT 250 mM in acetonitrile
- tri-alkyne-containing compounds can be introduced post-synthetically (see, for example, section E, below).
- the 5’ terminal nucleotide of the sense strand was functionalized with a nucleotide that included a primary amine at the 5’ end to facilitate attachment to the tri-alkyne-containing scaffold.
- TFA aminolink phosphoramidite was dissolved in anhydrous acetonitrile (50 mM) and molecular sieves (3A) were added.
- 3-Benzylthio-lH-tetrazole BTT, 250 mM in acetonitrile
- Ethylthio-lH-tetrazole ETT, 250 mM in acetonitrile was used as activator solution. Coupling times were 10 min (RNA), 90 sec (2’ O-Me), and 60 sec (2’ F).
- RNAi agents were lyophilized and stored at -15 to -25 °C.
- Duplex concentration was determined by measuring the solution absorbance on a UV-Vis spectrometer in l x PBS. The solution absorbance at 260 nm was then multiplied by a conversion factor and the dilution factor to determine the duplex concentration. The conversion factor used was either 0.037 mg/(mL-cm), or, alternatively for some experiments, a conversion factor was calculated from an experimentally determined extinction coefficient.
- E. linker having the formula: was used to conjugate av[36 ligands described herein for each of the Examples 4-7 below.
- An amidation reaction to link the free amine at the 5' terminus of the sense strand, and a copper click reaction was used to conjugate the respective azide-containing ligands of formulas 40p- 60p.
- Example conditions for the copper click reaction are provided in Example 2G below.
- RNAi agent conjugate an activated ester such as a DBCO linker to a 5' amine or 3' amine functionalized sense strand of an RNAi agent
- an activated ester such as a DBCO linker
- DMSO dimethyl sulfoxide
- TEA trimethyl sulfoxide
- 3 equivalents of activated ester linker were added to the mixture.
- the solution was allowed to react for 1-2 hours, while monitored by RP-HPLC-MS (mobile phase A 100 mM HFIP, 14 mM TEA; mobile phase B: acetonitrile on an XBridge Cl 8 column, Waters Corp.)
- the product was then precipitated by adding 12 mL acetonitrile and 0.4 mL PBS and centrifuging the solid to a pellet.
- the pellet was then redissolved in 0.4 mL of 1XPBS and 12 mL of acetonitrile.
- the resulting pellet was dried on high vacuum for one hour.
- a 75 mg/mL solution in DMSO of av[36 integrin ligand was made.
- a 1.5 mL centrifuge tube containing tri-alkyne functionalized duplex (3mg, 75pL, 40mg/mL in deionized water, -15,000 g/mol)
- 25 pL of IM Hepes pH 8.5 buffer is added.
- 35 pL of DMSO was added and the solution is vortexed.
- av[36 integrin ligand was added to the reaction (6 eq/duplex, 2 eq/alkyne, ⁇ 15pL) and the solution is vortexed.
- pH paper pH was checked and confirmed to be pH -8.
- ii.DBCO Linker The pellet was dissolved in 50/50 DMSO/water at 50 mg/mL. Then 1.5 equivalents of ligand was added per DBCO linker. The reaction was allowed to proceed for 30-60 minutes. The reaction was monitored by RP-HPLC-MS (mobile phase A 100 mM HFIP, 14 mM TEA; mobile phase B: acetonitrile on an XBridge C18 column, Waters Corp.) The product was precipitated by adding 12 mL acetonitrile, 0.4mL PBS and the solid was centrifuged to a pellet. The pellet was redissolved in 0.4mL 1XPBS and then 12mL of acetonitrile was added. The pellet was dried on high vacuum.
- PK/PD modulators were attached to the RNAi agent in addition to the av[36 integrin receptor targeting ligands.
- Example PK/PD modulators as used in further examples are shown in the table below (PK/PD modulators were purchased from commercial suppliers where indicated):
- PK/PD Modulators Either prior to or after annealing and prior to or after conjugation of one or more targeting ligands, one or more PK enhancers can be linked to the an RNAi agent.
- RNAi agent a group consisting of RNA molecules that can be linked to the constructs set forth in the Examples depicted herein.
- the following describes the general process used to link a maleimide-functionalized PK enhancer to the (C6- SS-C6) or (6-SS-6) functionalized sense strand of an RNAi agent by undertaking a dithiothreitol reduction of disulfide followed by a thiol-Michael Addition of the respective PK enhancer: In a vial containing functionalized sense strand was dissolved at 75mg/mL in 0. IM Hepes pH 8.5 buffer, and 25 eq of dithiothreitol is added.
- the conjugate was precipitated three times in a solvent system of lx phosphate buffered saline/acetonitrile (1:40 ratio), and dried.
- a 75 mg/mL solution of maleimide functionalized PK enhancer in DMSO was then made.
- the disulfide-reduced (i.e., 3' C6-SH, 5' HS-C6, or 3’ 6-SH functionalized) sense strand was dissolved lOOmg/mL in deionized water, and three equivalents of maleimide-functionalized PK enhancer was added.
- Peptide 1 was prepared by modification of Arg-Gly-Asp(tBu)-Leu-Ala-Abu-Leu- Cit-Aib-Leu-Peg5-CO2-2-Cl-Trt resin 1 that was obtained using general Fmoc peptide chemistry on CS Bio peptide synthesizer utilizing Fmoc-Pegs-CChH preloaded 2-Cl-Trt resin on (0.79 mmol/g) at 4.1 mmol scale as described above. Following cleavage from resin the peptide 6-2 was converted into tetrafluorophenyl ester 6-3, and the crude product was used in the next step without purification.
- an activated ester- functionalized targeting ligand such as av[36 peptide 1 to an amine functionalized RNAi agent comprising an amine, such as C6-NH2, NH2-C6, or (NH2-C6)s, as shown in Table A, above.
- RNAi agent An annealed, lyophilized RNAi agent was dissolved in DMSO and 10% water (v/v%) at 25 mg/mL. Then 50-100 equivalents TEA and three equivalents of activated ester targeting ligand were added to the mixture. The reaction was allowed to stir for 1-2 hours while monitored by RP-HPLC-MS (mobile phase A: 100 mM HFIP, 14 mM TEA; mobile phase B: Acetonitrile; column: XBridge Cl 8). After the reaction was complete, 12 mL of acetonitrile was added followed by 0.4 mL of PBS and then the mixture was centrifuged. The solid pellet was collected and dissolved in 0.4 mL of IxPBS and then 12 mL of acetonitrile was added. The resulting pellet was collected and dried on high vacuum for 1 hour.
- Example 3 In Vivo Intravenous Administration of RNAi Agents Targeting Myostatin Conjugated to avP6 Integrin Ligands in Mice.
- RNAi agents that included a sense strand and an antisense strand were synthesized according to phosphorami dite technology on solid phase in accordance with general procedures known in the art and commonly used in oligonucleotide synthesis as set forth in Example 2 herein.
- the myostatin RNAi agents were designed to be capable of degrading or inhibiting translation of messenger RNA (mRNA) transcripts of myostatin in a sequence specific manner, thereby inhibiting expression of the myostatin gene.
- the RNAi agent used in this Example (AD06326) was comprised of modified nucleotides and more than one non-phosphodiester linkage, and included the following nucleotide sequences: Sense strand sequence (AD06326)
- nucleotide monomers are linked by standard phosphodiester linkages except where inclusion of a phosphorothioate linkage, as shown in the modified nucleotide sequences disclosed herein, replaces the phosphodiester linkage typically present in an oligonucleotide.
- RNAi agents are used as cargo molecules to test the delivery of a cargo molecule via an av[36 integrin to a cell of interest.
- RNAi agents were synthesized having nucleotide sequences directed to target the myostatin gene, and included a functionalized amine reactive group (NFh-Ce) at the 5' terminal end of the sense strand to facilitate conjugation to a DBCO linker.
- the RNAi agents were also synthesized with a (C6-SS-C6)dT at the 3' terminal end, which is used to conjugate a 40K PEG (2x2 arm) PK/PD modulator.
- the respective av[36 integrin ligands were then conjugated to the RNAi agents via a the DBCO click reaction, as described in Example 2G.ii., above.
- RNAi agent-av[36 integrin ligand conjugates of Example 4 were consistent for each of the Groups 2-10. Thus, the only variable for Groups 2 through 10 was the specific av[36 integrin ligand that was used.
- Example 4 In Vivo Intravenous Administration of RNAi Agents Targeting Myostatin Conjugated to uvP6 Integrin Ligands in Mice.
- mice were dosed via intravenous (“IV”) administration with 200 microliters, according to the following dosing Groups: Table 3. Dosing Groups of mice in Example 4.
- RNAi agents were synthesized having nucleotide sequences directed to target the myostatin gene, and included a functionalized amine reactive group (NFh-Ce) at the 5' terminal end of the sense strand to facilitate conjugation to a DBCO linker.
- the RNAi agents were also synthesized with a (C6-SS-C6)dT at the 3' terminal end, which is used to conjugate a 40K PEG (XY-4 arm) PK/PD modulator.
- the respective av[36 integrin ligands were then conjugated to the RNAi agents via a copper click reaction, as described in Example 2G.
- RNAi agent-av[36 integrin ligand conjugates of Example 4 were consistent for each of the Groups 2-10. Thus, the only variable for Groups 2 through 10 was the specific av[36 integrin ligand that was used.
- RNAi agents As shown in Table 4 above, many of the myostatin RNAi agents showed a reduction in mRNA expression in mice compared to control.
- Example 5 In Vivo Intravenous Administration of RNAi Agents Targeting Myostatin Conjugated to avP6 Integrin Ligands in Mice.
- RNAi agents were synthesized having nucleotide sequences directed to target the myostatin gene, and included a functionalized amine reactive group (NFh-Ce) at the 5' terminal end of the sense strand to facilitate conjugation to a DBCO linker.
- the RNAi agents were also synthesized with a (C6-SS-C6)dT at the 3' terminal end, which is used to conjugate a 40K PEG (4-arm) PK/PD modulator or PEG95+C22 PK/PD modulator.
- the respective av[36 integrin ligands were then conjugated to the RNAi agents via a copper click reaction, as described in Example 2G.
- Example 6 In Vivo Intravenous Administration of RNAi Agents Targeting Myostatin Conjugated to avP6 Integrin Ligands in Mice.
- RNAi agents were synthesized having nucleotide sequences directed to target the myostatin gene, and included a functionalized amine reactive group (NFh-Ce) at the 5' terminal end of the sense strand to facilitate conjugation to a DBCO linker.
- the RNAi agents were also synthesized with a (C6-SS-C6)dT at the 3' terminal end, which is used to conjugate a 40K PEG (4-arm) PK/PD modulator.
- the respective av[36 integrin ligands were then conjugated to the RNAi agents via a copper click reaction, as described in Example 2G.
- the RNAi agent-av[36 integrin ligand conjugates of Example 4 the RNAi agent as well as the linker structures, were consistent for each of the Groups 2 and 6-10.
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WO2024105197A1 (en) * | 2022-11-17 | 2024-05-23 | Vincerx Pharma Gmbh | Small molecule-drug-conjugates cleavable in a tumor microenvironment |
WO2024129931A1 (en) * | 2022-12-14 | 2024-06-20 | Alnylam Pharmaceuticals, Inc. | ALPHA-V BETA-6(ανβ6) INTEGRIN LIGANDS FOR EXTRAHEPATIC DELIVERY |
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WO2019089765A1 (en) * | 2017-11-01 | 2019-05-09 | Arrowhead Pharmcaceuticals, Inc. | Integrin ligands and uses thereof |
US20190248832A1 (en) * | 2016-11-01 | 2019-08-15 | Arrowhead Pharmaceuticals, Inc. | Alpha-v beta-6 integrin ligands and uses thereof |
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US20190248832A1 (en) * | 2016-11-01 | 2019-08-15 | Arrowhead Pharmaceuticals, Inc. | Alpha-v beta-6 integrin ligands and uses thereof |
WO2019089765A1 (en) * | 2017-11-01 | 2019-05-09 | Arrowhead Pharmcaceuticals, Inc. | Integrin ligands and uses thereof |
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DATABASE PubChem substance ANONYMOUS : "SID 421537036 ", XP055919930 * |
Cited By (2)
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WO2024105197A1 (en) * | 2022-11-17 | 2024-05-23 | Vincerx Pharma Gmbh | Small molecule-drug-conjugates cleavable in a tumor microenvironment |
WO2024129931A1 (en) * | 2022-12-14 | 2024-06-20 | Alnylam Pharmaceuticals, Inc. | ALPHA-V BETA-6(ανβ6) INTEGRIN LIGANDS FOR EXTRAHEPATIC DELIVERY |
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MX2023002867A (en) | 2023-03-23 |
AU2021342163A1 (en) | 2023-04-06 |
CN116783294A (en) | 2023-09-19 |
KR20230066400A (en) | 2023-05-15 |
CA3189081A1 (en) | 2022-03-17 |
EP4211101A1 (en) | 2023-07-19 |
JP2023541422A (en) | 2023-10-02 |
US20230407313A1 (en) | 2023-12-21 |
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